Document Detail

Identification of irradiated foods by the thermoluminescence of mineral contamination.
MedLine Citation:
PMID:  2238836     Owner:  NLM     Status:  MEDLINE    
This investigation assessed the radiation-induced thermoluminescence (TL) of food minerals for identifying irradiated foods. Mineral contamination, rather than the inherent mineral content, of foods was studied. Positive identification of foods given 1-10-kGy doses depends on the contents and composition of the mineral contamination and the time span between irradiation and TL analysis. All 20 irradiated spice and herb samples could be identified without comparing them with unirradiated material. Three out of 60 lots of spices and herbs examined so far were so pure that the mineral contents were too low to allow TL analysis. If the soil where potatoes are grown contains feldspars, sprout inhibition treatment with 100-200-Gy doses can also be detected for up to one year, using the 90-250 degrees C low-temperature part of the TL spectrum for evaluation.
T Autio; S Pinnioja
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Zeitschrift für Lebensmittel-Untersuchung und -Forschung     Volume:  191     ISSN:  0044-3026     ISO Abbreviation:  Z Lebensm Unters Forsch     Publication Date:  1990 Sep 
Date Detail:
Created Date:  1990-12-04     Completed Date:  1990-12-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7509812     Medline TA:  Z Lebensm Unters Forsch     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  177-80     Citation Subset:  IM    
Department of Radiochemistry, University of Helsinki, Finland.
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MeSH Terms
Aluminum Silicates / analysis
Food Contamination / analysis*
Food Irradiation*
Gamma Rays
Luminescent Measurements
Minerals / analysis*
Potassium / analysis
Potassium Compounds*
Solanum tuberosum
Reg. No./Substance:
0/Aluminum Silicates; 0/Minerals; 0/Potassium Compounds; 12168-80-8/feldspar; 7440-09-7/Potassium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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